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Aug
26
accepted Large regions of the plane $(x,y) \in \mathbb{Z}^2$ with no relatively prime points: $\mathrm{gcd}(x,y) > 1$
Aug
19
accepted Prove or disprove: $ \sum_{b \vee d = x} \tau(b) \tau(d) = \tau(x)^3$
Jul
30
accepted Computing the intersection of two arithmetic sequences $(a\mathbb{Z} + b) \cap (c \mathbb{Z} + d)$
Jul
29
accepted Can the numbers $2^m 3^n$ have an infinitely long arithmetic sequence?
May
16
accepted Show that $\int_{-T}^T |\zeta(\frac{1}{2} + it)|^4 \, dt \sim T \log(T)^4 $
May
13
accepted Math vs Probability vs Statistics
Apr
23
accepted modification of Dedekind cuts
Apr
22
accepted Explicit Galois Action for $X^3 - X -1$
Dec
31
accepted $\int_{-\pi/2}^{\pi/2} dx \, \sin^{2n} x $
Dec
9
accepted inversion of the circle $t \mapsto (3 + is) + e^{it} $ around the unit circle.
Nov
11
accepted Find $n$ such that $(\mathbb{Z}/n\mathbb{Z})^\times \simeq \mathbb{Z}_2 \times \mathbb{Z}_2$.
Nov
7
accepted ODE satisfied by $\,f(\xi) = \int_0^1 \frac{e^{-\xi x}}{\sqrt{1 - x^2}}dx$
Sep
17
accepted Is $\int_{-1}^1 \frac{dx}{\sqrt{x^2 - 1}} $ divergent?
Aug
24
accepted Analogue of $\zeta(2) = \frac{\pi^2}{6}$ for Dirichlet L-series of $\mathbb{Z}/3\mathbb{Z}$?
Aug
18
accepted Log concavity of binomial coefficients: $ \binom{n}{k}^2 \geq \binom{n}{k-1}\binom{n}{k+1} $
Jun
18
accepted what are the “points” of the scheme $\mathbb{Z}_8[x] /(x^2 + 7)$
Jun
13
accepted Exact value of $\tan 50^\circ$
Jun
7
accepted which continued fraction is bigger? $[1,1,a,1,1,1,1]$ or $[1,1,1,b,1,1,1]$
May
21
accepted uniform spanning tree of $2 \times n$ graph
May
17
accepted A combinatorial proof of Euler's Criterion? $(\tfrac{a}{p})\equiv a^{\frac{p-1}{2}} \text{ mod p}$